import axios from "axios";

const service = axios.create({
    responseType: 'arraybuffer'
});

//拦截器，登录后方可导出
service.interceptors.request.use(config => {
   config.headers['Authorization'] = window.sessionStorage.getItem('tokenStr');
   return config;
},error => {
    console.log(error);
});

//响应拦截器
service.interceptors.response.use(resp => {
    const headers = resp.headers;
    let reg = RegExp(/application\/json/);
    if (headers['content-type'].match(reg)){
        resp.data = uintToString(resp.data);
    }else{
        let fileDownload = require('js-file-download');
        let fileName = headers['content-disposition'].split(';')[1].split('filename=')[1];
        let contentType = headers['content-type'];
        fileName = decodeURIComponent(fileName);
        fileDownload(resp.data,fileName,contentType);
    }
},error => {
    console.error(error);
});

function uintToString(uintArray) {
    let encodedString = String.fromCharCode.apply(null,new Uint8Array(uintArray));
    let decodedString = decodeURIComponent(escape(encodedString));
    return JSON.parse(decodedString);
}

let base = '';

export  const downloadRequest = (url,params) => {
    return service({
        method:'get',
        url: `${base}${url}`,
        data: params
    });
};

export default service;
